[GHC] #10283: Make it possible to suppress warnings produced by -fdefer-type-errors

[GHC]

#10283: Make it possible to suppress warnings produced by -fdefer-type-errors
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        Reporter:  adamgundry        |                   Owner:
            Type:  feature request   |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Compiler (Type    |                 Version:  7.10.1
  checker)                           |                Keywords:
      Resolution:                    |            Architecture:
Operating System:  Unknown/Multiple  |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Comment (by kosmikus):

 I'm also in support of this. I've used `-fdefer-type-errors` for a similar
 purpose already, and have been mildly annoyed by the warning that's
 displayed too. In my case, it was a single test case, but I can imagine
 this becomes more pronounced if you want to use it regularly and for many
 things.

 [I'll open another ticket for a related issue.]

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10283#comment:2>
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